What's the main difference between using Database.EnsureCreated() and Migrations in Entity Framework Core?
- Database.EnsureCreated() creates a database if it doesn't exist, ignoring migrations
- Migrations allow for version control and tracking of database schema changes
- Database.EnsureCreated() is used for unit testing only
- Migrations are slower than EnsureCreated()
The main difference is that Database.EnsureCreated() creates a database without tracking schema changes, often used for development or unit testing, whereas migrations provide version control for your database schema, allowing you to apply, rollback, and manage changes over time.
For projects focused on background tasks and might run as Windows services or Linux daemons, you should use the ________ template.
- Worker
- Web API
- Blazor
- MVC
The Worker template in ASP.NET Core is specifically designed for projects that focus on background tasks. It's ideal for creating services that perform work in the background and can be run as Windows services or Linux daemons. This template provides the necessary infrastructure for background task execution.
Using the {id:int} syntax in an attribute route enforces that the id parameter must be of type ______.
- String
- Integer
- Double
- DateTime
The {id:int} syntax in an attribute route specifies that the id parameter must be of type integer. This is a way to ensure that the data passed in the URL is an integer value, and if it's not, the route won't match.
After setting up your new ASP.NET Core website, you find that your site's main logo and stylesheet aren't loading. What could be a potential reason for this issue?
- Incorrect file paths or URLs
- Incompatible browser
- Server overload
- Database connection issue
One of the common reasons for missing images and stylesheets in a web application is incorrect file paths or URLs. Check that the paths specified in your HTML or CSS files are accurate and relative to the 'wwwroot' folder.
You've been introduced to Razor Tag Helpers in ASP.NET Core and want to understand their basic usage. What are Tag Helpers primarily used for in Razor views?
- Formatting date and time values
- Generating HTML elements with server-side logic
- Creating CSS styles
- Running JavaScript code
Tag Helpers in Razor views are primarily used for generating HTML elements with server-side logic. They allow you to create dynamic HTML elements and attributes based on server-side data and logic, making it easier to work with server-side data in your views.
Which of the following is a built-in Razor Tag Helper in ASP.NET Core?
-
The
tag helper is a built-in Razor Tag Helper in ASP.NET Core. It is used to generate links and forms with correct routing information, making it easier to create URLs that are strongly typed and route to the appropriate controller actions.
When securing your ASP.NET Core Web APIs, which authentication approach uses a compact, URL-safe means of representing claims to be transferred between two parties?
- OAuth 2.0
- JSON Web Tokens (JWT)
- SAML (Security Assertion Markup Language)
- OpenID Connect
JSON Web Tokens (JWT) is an authentication approach commonly used in ASP.NET Core Web APIs. JWTs are compact and URL-safe, making them efficient for transferring claims between parties. They provide a secure way to represent user identities and access permissions.
What is the primary difference between the _ViewImports.cshtml and _ViewStart.cshtml files in Razor?
- _ViewImports.cshtml sets directives and namespaces
- _ViewStart.cshtml sets layout and common code
- They serve the same purpose
- _ViewStart.cshtml sets routing rules
The primary difference between _ViewImports.cshtml and _ViewStart.cshtml in Razor is their purpose. _ViewImports.cshtml is used to set directives, namespaces, and base class declarations for views, whereas _ViewStart.cshtml is used to specify common layout code and execute code before rendering views. _ViewStart.cshtml is typically used to set layout and execute code that should apply globally to multiple views.
For ensuring that the test runs in isolation, real services or components might be replaced with _________ during unit testing.
- Mocks
- Stubs
- Dummies
- Fakes
During unit testing, real services or components that are external to the unit being tested are often replaced with mocks or stubs. Mocks provide controlled behavior for testing without relying on the actual implementations of these external components.
When deploying an ASP.NET Core application using Docker, which file is crucial for defining the environment and settings of the container?
- Dockerfile
- appsettings.json
- Startup.cs
- Package.json
The crucial file for defining the environment and settings of a Docker container for an ASP.NET Core application is the Dockerfile. This file contains instructions on how to build the container image, what base image to use, and how to configure the environment.
Your ASP.NET Core application has a scenario where a user tries to update a record that another user has already modified. How can you handle such scenarios using Entity Framework Core to ensure data integrity?
- Optimistic Concurrency
- Pessimistic Locking
- No Locking
- Dirty Read
Optimistic Concurrency is a technique used in Entity Framework Core to handle concurrent updates. When enabled, it checks if a record has been modified by another user since it was loaded, and if so, it prevents the update, ensuring data integrity and preventing data loss due to overwrites.
In a CI/CD pipeline for an ASP.NET Core application, after the code is committed to a version control system, what is typically the next step?
- Build
- Manual Testing
- Deployment
- Documentation
After code is committed to a version control system (e.g., Git), the next typical step in a CI/CD (Continuous Integration/Continuous Deployment) pipeline is the build process. During the build, the code is compiled, tested, and packaged, preparing it for deployment to different environments.